Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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All episodes available on BBC iPlayer (1 new / 23 total)
BBC Two except Northern Ireland
All upcoming (0 new and 1 repeat)
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Weigh up the pros and cons of e-cigarettes, and find out how they compare with tobacco.
See all clips from Horizon
A handful of leftfield scientists have been trying to harness the power of gravity and turn science fiction into reality.
Find out about Dmitry Itskov and the scientists and experts hoping to upload the mind to a computer and live forever.
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